Oil burner



Aug. 14, 1945. c E, BEYER OIL BURNER Filed .Sept. 1, 1945 ATTORNEYS Patented Aug. 14, 1945 UNITED STATES PATENT OFFICE OIL BURNER Charles E. Beyer, Rosamond, Calif.

Application September 1, 1943, Serial No. 500,833

4 Claims.

My invention relates to oil burning equipment, and has among its objects and advantages the provision of an improved oil burner particularly suitable for low fire purposes.

There are various types of low fire oil burning devices on the market wherein the burner pots are provided with either complete circular disks or rings. Such devices operate to reduce the capacity of the burner in that they cover too much of the bottom area of the pots, with the result that much of the radiant heat from high fires is cut oif, which heat is depended upon to heat the bottom of the pot so that the fuel oil will vaporize rapidly- 1 Accordingly, an object of my invention is to provide an oil burner of such construction as to be highly efficient in the utilization of radiant heat when operated with high fires.

Another object is to provide an oil burner designed to handle an exceptionally low fire without the formation of carbon or soot.

In the accompanying drawing:

Figure 1 is a vertical sectional 'view of my burner.

Figure 2 is a sectional view along the line 2-2 of Figure 1.

Figure 3 is a sectional view along the line 3-3 of Figure 1, and

Figure 4 is a sectional detail view of a mount.

In the embodiment of the invention selected for illustration, 1 make use of a base I6 comprising a bottom I2, a depending flange l4 and an upstand ing annular flange I6. A tubular combustion chamber wall or shell I8 is mounted inside the flange I6, which wall supports a fire ring 20. This fire ring is spaced from the upper end of the wall I8 by tapered members 22 attached to the fire ring 20 by screws 24, The pointed ends of the members 22 project inwardly of the wall I8 so as to lend continuity to the secondary air stream entering the burner between the wall and the fire ring.

In a burner wherein the wall I8 has an outside diameter of eight inches, the members 22 are of No. 22 gauge thickness. and the wall I8 comprises No. 18 gauge material. The opening 26 in the fire ring is five and one quarter inches in diameter.

Bolts 28 have heads 30 countersunk in the fire ring 20 and extend through a flange 32 lying in the plane of the bottom I2. Compression springs 34 are interposed between the flange 32 and the nuts 36 on the bolts 28 to hold the fire ring in place. However, the springs 34 yield to provide the necessary compensation for expansion and contraction of the parts of the burner.

An upstanding annular flange 38 is provided on the flange 32 to constitute a support for a tubular wall-or shell 40 of larger diameter than the wall I8, so that an air space 42 is provided about the wall I8. The wall 40 fits closely to the firering 26, and the flange 32 is provided with openings 44 for the admission of air into the space 42. The wall 40 extends a short distance above the fire ring 20.

Inside the wall I8 is mounted a horizontal flange or balfie 46, which curves through an arc of 180 degrees. In a wall In of the diameter indicated. the fiange 46 is preferably two inches in width. Ears 46 are formed on the flange, which ears are fixedly secured to the wall I8 by screws 50. This flange is located closer to the bottom end of the wall I8 than its upper end. The fuel oil is introduced in the burner at a point slightly above the bottom I2, as through the medium of a. pipe 52. This point of admission lies at equal distances from the ends of the flange 46.

Near the top end of the wall I8 is provided a row of primary air inlet openings 54. These openinss are of No. 40 gauge and comprise thirtynine in number equally spaced circumferenti'ally about the wall. A second row 56 of primary air inlet openings is located beneath the row 54. The openings 56 are No. 34 gauge and comprise nineteen in number and are parallel with openings 64. The third row 68 of primary air inlet openings also comprise nineteen in number and are of No. 34 gauge. Nineteen No. 36 gauge openings 60 are arranged in a row underneath the row 58. All the rows are preferably equally spaced one from the other. Underneath the flange or name 46 is provided a series of air inlet openings 62 for the admission of air beneath the flange. These openings are angled to direct the air over the oil fuel inlet, as indicated by the arrows 64 in Figure 2. Such concentration of air directly over the fuel inlet permits an exceptionally small quantity of entering fuel to burn in suspension and with perfect cleanliness. The rows of openings 54, 56, '58 and 60 admit sufii cient air to handle high fires, as when a large quantity of fuel oil is being burnt. Because of the presence of the ballle 46, the holes in the wall I8 above the baflle may be considerably larger than in the absence of the baflle. Such large openings without the baflle produces an objectionable amount of soot and the like under low fire burning conditions.

A cover plate 86 is attached to the flange l4 by screws II. The space II between the plate and the bottom I! may be filled with suitable insulation in installations rendering such insulation desirable.

Without further elaboration, the foregoing will so fully explain my invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions oi service.

I claim:

1. An oil burner comprising an annular combustion chamber .shell having a fire ring at its upper end, a base supporting the shell said shell having an oil inlet near its bottom, an arcuate baiile attached to said shell above said oil inlet and extending horizontally partly about the shell, said shell being provided with air inletopenings located between said bailie and the oil inlet and angled to admit air to a localized zone above the oil inlet, said shell being provided with primary air inlet openings located above said bafile, and

said fire ring being spaced from the shell to provide a secondary air inlet 2. The invention described in claim 1 wherein said baille curves through an arc of 180 degrees.

3. The invention described in claim 1 wherein said base includes a laterally extending fiange, said flange having a second upstanding outer flange, a second shell mounted in said second a,ae'2,aea

flange and coacting with said fire ring to provide an air chamber extending about said first mentioned shell, and said first mentioned flange havingopeningsiortheadmiasionoiairtosaidair chamber.

4. An oil burner comprising a horizontal base member having upper and lower opposed annular flanges spaced from the edge of the base, an upwardly extending annular flange at the edge oi the base. said base provided with openings between theedge fiange and the first flanges, walls seated on the base. one within the edge fiange, and one within the inner upwardly extending flange, the inner wall being provided with air openings, a fire ring supported in spaced relationship to the upper edge oi the inner wall and extending outwardly therefrom, and the outer wall lying in close proximity with the outer edge of the fire ring and rising above the tire ring, a semicircular bafiie attached to the inner wall and extending inwardly, an oil inlet below the hafile, and the inner wall being provided with air openings in one side between the bafile and oil inlet, said openings being formed to extend angularly through the wall to direct air across the path 01' oil from the oil inlet.

CHARLES E. BEYER. 

